GEA Grasso - Fig. 9: Solenoid Valve; Fig. 10: Change-Over Valve; Fig. 11: Oil Pressure Regulating Valve; Fig. 12: Overflow Valve, Safety Valve

OPERATING INSTRUCTIONS
CO
2
/NH
3
CASCADE UNIT
250 - 1000 KW
18 _551511_om_kas_gbr_1_.doc
Solenoid valve Pressure controlled check valve
Controlled by Grasso System Control (GSC) controlled self-sufficient
fig. 9: Solenoid valve
Change-over valve
fig. 13: Pressure controlled check valve
Quick acting valve, spring-held
manually operated if necessary
fig. 10: Change-over valve
oil pressure regulating valve
fig. 14: Quick acting valve, spring-held
Δp x,x ± x bar setted control pressure from
reference pressure
Charging valve, draining valve
— ½“ and ¾“ connections
— with cap
fig. 15: Charging valve, draining valve
fig. 11: oil pressure regulating valve
Service valve
Danger!
— Connection Rp ¼“
An oil pressure adjusted too high or too
low can lead also after short operation
time to serious compressor damages or
even to a total breakdown of the
compressor!
— For pressure gauges and transducers
Overflow valve, safety valve
fig. 16: Service valve
fig. 12: Overflow valve, safety valve